diff --git a/mysys/my_thr_init.c b/mysys/my_thr_init.c
index de926a1e969..853a2761224 100644
--- a/mysys/my_thr_init.c
+++ b/mysys/my_thr_init.c
@@ -46,8 +46,6 @@ pthread_mutexattr_t my_fast_mutexattr;
 pthread_mutexattr_t my_errorcheck_mutexattr;
 #endif
 
-uint thd_lib_detected;
-
 #ifdef NPTL_PTHREAD_EXIT_BUG /* see my_pthread.h */
 
 /*